.input-wrapper {
    display: flex;
    flex-direction: row;
    position: fixed;
    top: .44rem;
    left: 0;
    width: 100%;
    height: .38rem;
    padding: .04rem .1rem;
    box-sizing: border-box;
    border-bottom: 1px solid #ddd;
    background-color: #fff;
  
    input {
      flex: 1;
      display: block;
      height: .3rem;
      border: 1px solid #ddd;
      font-size: .14rem;
      text-indent: .1rem;
    }
    button {
      margin-left: .1rem;
    }
  }